Acee [Tue, 19 Dec 2023 18:30:38 +0000 (13:30 -0500)]
ospfd: Fix opaque functab leak and opaque AS cleanup problems
1. Fix ospf opaque LSA function table memory leak.
2. Remove incorrect one-to-one association of OSPF info-per-type
to function table (since there many be many).
3. Fix a problem with opaque AS external cleanup that was exposed
by #2.
4. Fix LSA memory leak in ospf_opaque_type9_lsa_if_cleanup().
Donatas Abraitis [Sun, 17 Dec 2023 13:13:57 +0000 (15:13 +0200)]
bgpd: Validate Addpath capability flags per AF
Send/Receive:
This field indicates whether the sender is (a) able to receive
multiple paths from its peer (value 1), (b) able to send
multiple paths to its peer (value 2), or (c) both (value 3) for
the <AFI, SAFI>.
If any other value is received, then the capability SHOULD be
treated as not understood and ignored [RFC5492].
Olivier Dugeon [Thu, 14 Dec 2023 17:34:38 +0000 (18:34 +0100)]
tests: Update OSPF TE topotests
The OSPF TE topotest is using switches to interconnect router. During the test,
interfaces are shutdown on some routers to simulate link failure and check that
the TED is correctly updated. However, the switche between router avoid the
detection by the neighbor router that the interface is down i.e. the interface
line remains up as it is conneted to the switch and not to the router.
This patch update the tested topology by removing the switch and connect
directly the router excepted the inter AS link on R3. Interface are also
renamed accordingly.
Olivier Dugeon [Thu, 14 Dec 2023 17:22:32 +0000 (18:22 +0100)]
ospfd: Correct LSA parser which fulfill the TED
Traffic Engineering Database (TED) is fulfill from the various LSA advertised
and received by the router. To remove information on the TED, 2 mechanisms are
used: i) parse TE Opaque LSA when there are flushed and ii) compare the list of
prefixes advertised in the Router LSA with the list of corresponding edges and
subnets contained in the TED. However, this second mechanism assumes that the
Router LSA is unique and contains all prefixes of the advertised router.
But, this is wrong. Prefixes could be advertised with several Router LSA.
This conduct to remove edge and subnet in the TED while it should be maintained.
The result is a faulty test with ospf_sr_te_topo1 topotest when server is heavy
loaded.
This simple patch removed deletion of edges and subnets when parsing the Router
LSA and only removed them when the corresponding TE Opaque LSA is flushed. In
addition, TE Opaque LSA are not flushed when OSPF ajacency goes down. This
patch also correct this second problem.
Donald Sharp [Wed, 13 Dec 2023 17:05:25 +0000 (12:05 -0500)]
tests: ospf_suppress_fa sleeps, convert to run_and_expect
The test_ospf_suppres_fa.py script is using straight
up sleeps before testing that the next step worked properly.
On a unloaded test system this will work 100% of the time
on a loaded test system this will have random failures.
Convert the test to use run_and_expect and give each
section of the test 30 seconds to get to the next state
appropriately instead of 10.
Donald Sharp [Thu, 14 Dec 2023 13:19:36 +0000 (08:19 -0500)]
zebra: Prevent possible wedged fpm write
An operator is reporting that the dplane_fpm_nl connection has
started to accumulate contexts. One such path that could cause
this is that the obuf used is full and stays full. This would
imply that what ever is on the receiving end has gotten wedged
and is not reading from the stream of data being sent it's way.
If after 15 seconds of no response, let's declare the connection
dead and reset it.
Louis Scalbert [Wed, 14 Jun 2023 13:19:15 +0000 (15:19 +0200)]
topotests: log exabgp by default
Log exabgp by default in /tmp/topotests/<testname>/<peername>/exabgp.log
Level is INFO.
Note that in case the configuration syntax is invalid, exabgp does not
log into the file and exits at startup. You can check a configuration
syntax by running:
> exabgp <exabgp.cfg>
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Donald Sharp [Tue, 12 Dec 2023 22:48:16 +0000 (17:48 -0500)]
bgpd: Have `show bgp vrf all ipv4 uni summ` display vrf NAME
The vrf name was not being displayed in this output.
New output:
eva# show bgp vrf all ipv4 uni summ
BGP router identifier 0.0.0.0, local AS number 99 VRF RED vrf-id 14
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 1, using 20 KiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
192.168.119.1 4 0 0 0 0 0 0 never Active 0 N/A
Total number of neighbors 1
BGP router identifier 0.0.0.0, local AS number 99 VRF GREEN vrf-id 15
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 1, using 20 KiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
192.168.119.1 4 0 0 0 0 0 0 never Active 0 N/A
Total number of neighbors 1
BGP router identifier 192.168.122.1, local AS number 99 VRF default vrf-id 0
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 1, using 20 KiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
192.168.119.1 4 0 0 0 0 0 0 never Active 0 N/A
Total number of neighbors 1
BGP router identifier 0.0.0.0, local AS number 99 VRF GrEEn vrf-id -1
BGP table version 0
RIB entries 0, using 0 bytes of memory
Peers 1, using 20 KiB of memory
Neighbor V AS MsgRcvd MsgSent TblVer InQ OutQ Up/Down State/PfxRcd PfxSnt Desc
192.168.119.1 4 0 0 0 0 0 0 never Idle 0 N/A
Donald Sharp [Mon, 11 Dec 2023 15:46:53 +0000 (10:46 -0500)]
bgpd: Make `suppress-fib-pending` clear peering
When a peer has come up and already started installing
routes into the rib and `suppress-fib-pending` is either
turned on or off. BGP is left with some routes that
may need to be withdrawn from peers and routes that
it does not know the status of. Clear the BGP peers
for the interesting parties and let's let us come
up to speed as needed.
Donald Sharp [Tue, 12 Dec 2023 18:29:47 +0000 (13:29 -0500)]
zebra: Don't leak memory in rtadv.c code on shutdown
The adata variable was being leaked on shutdown since
it was calloc'ed. There is no need to make this dynamic
memory. Just choose a size and use that. Add a bit
of code to ensure that if it's not large enough,
it will just stop and the developer will fix it.
Donald Sharp [Mon, 11 Dec 2023 20:22:07 +0000 (15:22 -0500)]
zebra: Properly unregister hook on shutdown
the zebra pseudo wire code was registering a callback
per vrf. These callbacks are not per vrf based. They
are vrf agnostic so this was a mistake. Modify the code
to on startup register once and on shutdown unregister once.
Finally rename the zebra_pw_init and zebra_pw_exit functions
to more properly reflect when they are called.
Philippe Guibert [Mon, 11 Dec 2023 16:23:50 +0000 (17:23 +0100)]
bgpd: move l3nhg functions in separate bgp_nhg.[ch] file
This rework separates l3nhg functionality from the nexthop
tracking code, by introducing two bgp_nhg.[ch] files. The
calling functions are renamed from bgp_l3nhg* to bgp_nhg*.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
Olivier Dugeon [Thu, 7 Dec 2023 13:53:16 +0000 (14:53 +0100)]
ospfd: Correct SID check size
Segment Router Identifier (SID) could be an index (4 bytes) within a range
(SRGB or SRLB) or an MPLS label (3 bytes). Thus, before calling check_size
macro to verify SID TLVs size, it is mandatory to determine the SID type to
avoid wrong assert.
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